I know five people who have completed the type rating with Astreaus, two of those are on rolling contracts with Astreaus after paying for some line training as well as the type rating. The other two are now working for turbo prop operators. One did not complete the training as Astreaus wanted more money than initially quoted to provide the base training, he didn't have the extra money, so after completing the ground school had to take the balance of his money and stop the training.
The two who weren't employed actually found the rating to be more of a negative aspect. One was turned down by EasyJet as they said they prefer to type rate thier own people, the other was turned down by a turboprop operator, the interviewer made the comment of 'now that you have paid for a 737 type rating will you leave as soon as you get a job on a 737'.
In short unless you are guaranteed a job with Astreaus it seems a very risky move as it actually seems to make you more unemployable with some airlines and if you get work with a turboprop operator then you would have got the job with or without the type rating. So tread carefully.